10月21日(Ex.2C 1-9 )

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工作紙

1.自畫

2. (a)22,27 (b)324,972

3. (a)1,3,6,10,15 (b)1,4,9,16

4. (a)10,12,14 Arithmetic Sequence
(b)-3,-5,-7 Arithmetic Sequence
(c)16,32,64 Geometric Sequence
(d)24,12,6 Geometric Sequence

5. (a)15 (b)31

6. (a)12 (b)60

7. 第8項:24 第11項:89

8. (a)1128,1176,1225 (b)1225:第3項

9. (a)1,3,6,10 (b)15 (c)吻合